This is the discussion of the eastward shift of Charley from the 11pm Advisory:
Quote: IT SHOULD BE NOTED THAT FAST FORWARD MOTION IS LIKELY ENHANCING THE WINDS IN THE NORTHEASTERN SEMICIRCLE BEYOND THAT WHICH WOULD NORMALLY BE SUPPORTED BY A 999 MB STORM.
THE INITIAL MOTION IS 295/22...AND THE SHORT-TERM MOTION MAY BE JUST A LITTLE TO THE LEFT OF THAT. CHARLEY IS ON THE SOUTHWEST SIDE OF THE SUBTROPICAL RIDGE...WHILE TROPICAL STORM BONNIE IS OVER THE CENTRAL GULF OF MEXICO AND A DEVELOPING DEEP-LAYER TROUGH OVER THE CENTRAL UNITED STATES. THIS COMBINATION SHOULD MOVE CHARLEY WEST-NORTHWESTWARD FOR 24 HR OR SO...FOLLOWED BY RECURVATURE TO THE NORTH AND NORTHEAST. THE BIG QUESTION IS WHERE WILL THIS HAPPEN. THE VARIOUS MODELS ARE NOW TIGHTLY CLUSTERED FOR THE FIRST 72 HR... CALLING FOR CHARLEY TO TRACK ACROSS JAMAICA...THE CAYMAN ISLANDS... AND WESTERN CUBA ON ITS WAY TO THE SOUTHEASTERN GULF OF MEXICO. THE CLUSTERING HAS BECOME EVEN TIGHTER THAN 6 HR AGO SINCE THE GFS AND GFDL HAVE SHIFTED WESTWARD...WHILE THE NOGAPS HAS SHIFTED EASTWARD. THE FIRST 72 HR OF THE FORECAST TRACK IS NUDGE JUST A LITTLE TO THE EAST OF THE PREVIOUS PACKAGE. AFTER 72 HR...WHILE THERE IS GOOD AGREEMENT ON THE DIRECTION.S SIGNIFICANT DISAGREEMENT ON THE SPEED BETWEEN THE FASTEST NOGAPS...THE INTERMEDIATE GFDL...GFS...AND NHC98...AND THE SLOWER BAMS. THE FORECAST WILL COMPROMISE ON THE SPEED...CALLING FOR CHARLEY TO MOVE INLAND ALONG THE WESTERN GULF COAST OF FLORIDA AND ACCELERATE TO THE NORTHEAST. THE 72-120 HR PART OF THE FORECAST IS CONSIDERABLY FASTER THAN THE PREVIOUS FORECAST BASED ON THE STRENGTH OF THE TROUGH SHOWN IN THE MODELS.
I think it's based more on the trough/ridge than a reformation of the center of Charley. Dennis Phillips just made another point of noting that 5 of the models are in agreement on the track; although he is trying to stress it could change, I think he is yelling PAY ATTENTION!!! if you read between the lines.
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